Delta bond
[化] δ键
🧩 词语组成解析
delta
['deltə]
n. 希腊语字母表第四字母δ;（河流的）三角洲;[数]变量增量;
🗣️ 情景例句
Fortunately, I found his house at once.
很幸运地，我立刻找到他家。
That's good wisdom which is wisdom in the end.
最后的聪明才算真聪明。
What's it used for?
有什么用途？